package com.sky.service.user.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.mapper.common.DishMapper;
import com.sky.mapper.common.SetmealMapper;
import com.sky.mapper.user.ShoppingCartMapper;
import com.sky.pojo.Dish;
import com.sky.pojo.Setmeal;
import com.sky.pojo.ShoppingCart;
import com.sky.service.user.ShoppingCartService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * @Description ShoppingCartServiceImpl
 * @Author lijingtong
 * @Date 2024-10-13
 */
@Service
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 添加购物车
     * @param shoppingCartDTO
     */
    @Override
    public void add(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO,shoppingCart);
//        只能查询自己的购物车数据
        shoppingCart.setUserId(BaseContext.getCurrentId());
//      判断当前商品是否在购物车中
        List<ShoppingCart> shoppingCartList= shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList!=null && shoppingCartList.size()==1){
//            当前商品存在，更新数量，数量加1
            shoppingCart=shoppingCartList.get(0);
            shoppingCart.setNumber(shoppingCart.getNumber()+1);
            shoppingCartMapper.updateNumberById(shoppingCart);
        }else {
//            当前商品不存在，插入数据，数量变为1

//            判断当前添加到购物车的是菜品还是套餐
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId!=null){
//                添加到购物车的是菜品
               Dish dish=dishMapper.getById(dishId);
               shoppingCart.setName(dish.getName());
               shoppingCart.setImage(dish.getImage());
               shoppingCart.setAmount(dish.getPrice());
            }else {
//                添加到购物车的是套餐
                Setmeal setmeal = setmealMapper.getById(shoppingCartDTO.getSetmealId());
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }
    }


    /**
     * 查看购物车
     * @return
     */
    @Override
    public List<ShoppingCart> showShoppingCart() {
        List<ShoppingCart> shoppingCartList=  shoppingCartMapper.showShoppingCart(BaseContext.getCurrentId());
        return shoppingCartList;
    }

    /**
     * 清空购物车
     */
    @Override
    public void cleanShoppingCart() {
        shoppingCartMapper.cleanShoppingCart(BaseContext.getCurrentId());
    }
}
